For the gospel does not expressly demand works of our own by which we become righteous and are saved; indeed it condemns such works. Rather the gospel demands faith in Christ: that He has overcome for us sin, death, and hell, and thus gives us righteousness, life, and salvation not through our works, but through His own works, death, and suffering, in order that we may avail ourselves of His death and victory as though we has done it ourselves.
Martin Luther